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DSM staff profile

Dr John Woodfield

PositionSenior Lecturer
DepartmentDepartment of Surgical Sciences (DSM)
QualificationsMBChB(Otago) DTM&H(Liverpool) PhD(Otago) FRACS
Research summaryMeasuring and preventing complications, improving fitness before surgery, colorectal surgery, medical care in resource poor settings
Teaching
  • Convenor of ALM6 rotation in surgery
  • Clinical teaching of ALM4 students
  • ELM2 Integrated Cases tutor
Memberships
  • Member, Royal Australasian College of Surgeons
  • Member, Colorectal Surgical Society of Australia and New Zealand
ClinicalGeneral and colorectal surgery including colorectal cancer and IBD surgery, laparoscopic surgery, and colonoscopy

Research

Projects include

  1. Principal investigator in a RCT on High Intensity Interval Training (HIIT) to optimise fitness before major abdominal surgery: This work looks at whether we can improve fitness in the month before surgery. We are also setting up a study on how we can best use HIIT to help patients with multiple medical co-morbidities.
  2. Low anterior resection syndrome after anterior resection: We have completed a database including a questionnaire assessing function and quality of life after anterior resection for colorectal cancer. Further work will include prospective studies looking at interventions to try to improve function.
  3. Network meta-analysis on different methods of bowel preparation before elective colorectal surgery: This includes examining if there is any role for oral antibiotics. This is in collaboration with Professor John McCall, also in the Department of Surgical Sciences.
  4. Complications after surgery: Work includes looking at the incidence and impact of postoperative complications after discharge from hospital. We are using validated patient-centred questionnaires previously developed at the University of Otago to identify events that are significant to patients. Work developing software to improve follow-up in the community is under way. Another study is examining the physical, psychological, and quality of life impacts of surgical site infections.
  5. Preventing ileus after colorectal surgery: I am the Dunedin principal investigator in a RCT looking at the role of prucalopride in preventing ileus after elective colorectal surgery.
  6. Other projects
    • Colorectal: VRAM flap after abdominoperineal excision
    • General surgery: Later presentation of appendicitis in abdominal wall hernias
    • Complications: Predicting complications and how clinical feedback can improve prediction
    • Medical care in resource poor settings: Role of lymph node biopsy in diagnosing tuberculosis

Publications

Woodfield, J., Hulme-Moir, M., & Ly, J. (2017). A comparison of the cost of primary closure or rectus abdominis myocutaneous flap closure of the perineum after abdominoperineal excision. Colorectal Disease, 19(10), 934-941. doi: 10.1111/codi.13690

Woodfield, J. C., Sagar, P. M., Thekkinkattil, D. K., Gogu, P., Plank, L. D., & Burke, D. (2017). Accuracy of the surgeons' clinical prediction of postoperative major complications using a visual analog scale. Medical Decision Making, 37(1), 101-112. doi: 10.1177/0272989x16651875

Woodfield, J. C., Jamil, W., & Sagar, P. M. (2016). Incidence and significance of postoperative complications occurring between discharge and 30 days: A prospective cohort study. Journal of Surgical Research, 206(1), 77-82. doi: 10.1016/j.jss.2016.06.073

Taylor, S. G., van Rij, A. M., & Woodfield, J. C. (2016). Duodenal obstruction associated with an abdominal aortic aneurysm. Journal of Vascular Surgery Cases & Innovative Techniques, 2(3), 134-136. doi: 10.1016/j.jvscit.2016.05.008

Houlden, C., & Woodfield, J. (2015). The validity of the macroscopic appearance of lymph node biopsy in the diagnosis of tuberculosis. Tropical Doctor, 45(4), 221-224. doi: 10.1177/0049475515586501

Journal - Research Article

Woodfield, J., Hulme-Moir, M., & Ly, J. (2017). A comparison of the cost of primary closure or rectus abdominis myocutaneous flap closure of the perineum after abdominoperineal excision. Colorectal Disease, 19(10), 934-941. doi: 10.1111/codi.13690

Woodfield, J. C., Sagar, P. M., Thekkinkattil, D. K., Gogu, P., Plank, L. D., & Burke, D. (2017). Accuracy of the surgeons' clinical prediction of postoperative major complications using a visual analog scale. Medical Decision Making, 37(1), 101-112. doi: 10.1177/0272989x16651875

Woodfield, J. C., Jamil, W., & Sagar, P. M. (2016). Incidence and significance of postoperative complications occurring between discharge and 30 days: A prospective cohort study. Journal of Surgical Research, 206(1), 77-82. doi: 10.1016/j.jss.2016.06.073

Houlden, C., & Woodfield, J. (2015). The validity of the macroscopic appearance of lymph node biopsy in the diagnosis of tuberculosis. Tropical Doctor, 45(4), 221-224. doi: 10.1177/0049475515586501

Woodfield, J. C., Beshay, N., & van Rij, A. M. (2009). A meta-analysis of randomized, controlled trials assessing the prophylactic use of ceftriaxone: A study of wound, chest, and urinary infections. World Journal of Surgery, 33(12), 2538-2550. doi: 10.1007/s00268-009-0158-4

Woodfield, J. C., Chalmers, A. G., Phillips, N., & Sagar, P. M. (2008). Algorithms for the surgical management of retrorectal tumours. British Journal of Surgery, 95(2), 214-221. doi: 10.1002/bjs.5931

Woodfield, J. C., Beshay, N. M. Y., Pettigrew, R. A., Plank, L. D., & van Rij, A. M. (2007). American Society of Anesthesiologists classification of physical status as a predictor of wound infection. ANZ Journal of Surgery, 77, 738-741.

Woodfield, J. C., Pettigrew, R. A., Plank, L. D., Landmann, M., & van Rij, A. M. (2007). Accuracy of the surgeons' clinical prediction of perioperative complications using a visual analog scale. World Journal of Surgery, 31, 1912-1920.

Woodfield, J. C., Parry, B. I., Bissett, I. P., & McKee, M. (2006). Experience with the use of vacuum dressings in the management of acute enterocutaneous fistulas. ANZ Journal of Surgery, 76(12), 1085-1087. doi: 10.1111/j.1445-2197.2006.03956.x

Woodfield, J. C., van Rij, A. M., Pettigrew, R. A., van der Linden, A., & Bolt, D. (2005). Using cost of infection as a tool to demonstrate a difference in prophylactic antibiotic efficacy: A prospective randomized comparison of the pharmacoeconomic effectiveness of ceftriaxone and cefotaxime prophylaxis in abdominal surgery. World Journal of Surgery, 29, 18-24.

Koea, J., Rodgers, M., Thompson, P., Woodfield, J., Holden, A., & McCall, J. (2004). Laparoscopy in the management of colorectal cancer metastatic to the liver. ANZ Journal of Surgery, 74(12), 1056-1059. doi: 10.1111/j.1445-1433.2004.03267.x

Woodfield, J. C., Windsor, J. A., Godfrey, C. C., Orr, D. A., & Officer, N. M. (2004). Diagnosis and management of isolated pancreatic tuberculosis: Recent experience and literature review. ANZ Journal of Surgery, 74(5), 368-371. doi: 10.1111/j.1445-1433.2004.02996.x

Otieno, T., Woodfield, J. C., Bird, P., & Hill, A. G. (2004). Trauma in rural Kenya. Injury, 35(12), 1228-1233. doi: 10.1016/j.injury.2004.03.013

Woodfield, J. C., van Rij, A. M., Pettigrew, R. A., van der Linden, A. J., Solomon, C., & Bolt, D. (2003). A comparison of the prophylactic efficacy of ceftriaxone and cefotaxime in abdominal surgery. American Journal of Surgery, 185, 45-49.

Hill, A. G., & Woodfield, J. C. (2003). Thinking outside the box. ANZ Journal of Surgery, 73(11), 881-883. doi: 10.1046/j.1445-1433.2003.02716.x

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Journal - Research Other

Taylor, S. G., van Rij, A. M., & Woodfield, J. C. (2016). Duodenal obstruction associated with an abdominal aortic aneurysm. Journal of Vascular Surgery Cases & Innovative Techniques, 2(3), 134-136. doi: 10.1016/j.jvscit.2016.05.008

Woodfield, J. C., & van Rij, A. M. (2008). Reply. World Journal of Surgery, 32, 326-327. doi: 10.1007/s00268-007-9296-8

More publications...